# Khmer Math Formulas vs UMS Rean

The clearest difference is ads: UMS Rean at none against Khmer Math Formulas's shown. UMS Rean also leads on update cadence (every 3 months vs every 17 months). Khmer Math Formulas's advantage is iOS requirement (12.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Khmer Math Formulas ships an update every 17 months, UMS Rean every 3 months. The most recent releases landed on June 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Khmer Math Formulas | UMS Rean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/khmer-math-formulas/id1073035289/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Ad-supported | — |
| Size | 39 MB | 40 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Cheab Kunthea](https://appshunter.io/developer/1073035288) | [Ministry of Post and Telecommunications (MPTC)](https://appshunter.io/developer/1688540981) |

## What reviewers say

### Khmer Math Formulas

[App page](https://appshunter.io/ios/app/khmer-math-formulas/id1073035289)

Access a comprehensive collection of math formulas for grades 7-12, designed with a simple and user-friendly interface. This app serves as a valuable study assistant for students, making it easy to browse and find the formulas you need.

**Highlights:** Grade 7-12 math formulas, Simple user interface, Easy formula browsing, Study assistant, Useful materials

**Features:** macOS Compatibility

**In-app purchases:** none


### UMS Rean

[App page](https://appshunter.io/ios/app/ums-rean/id6742525939)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Khmer Math Formulas free?

Khmer Math Formulas is free to download, with no in-app purchases.

### Is UMS Rean free?

UMS Rean is free to download, with no in-app purchases.

### Do Khmer Math Formulas or UMS Rean have ads?

Khmer Math Formulas shows ads; UMS Rean does not.

### Which is updated more often, Khmer Math Formulas or UMS Rean?

Khmer Math Formulas ships an update every 17 months, and UMS Rean every 3 months. Most recently, Khmer Math Formulas was updated on June 10, 2026 and UMS Rean on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*